(** Authentication mechanisms *)

(** Log source for authentication operations *)
val src : Logs.Src.t

type t
(** Abstract authentication type *)

val none : t
(** No authentication *)

val basic : username:string -> password:string -> t
(** HTTP Basic authentication *)

val bearer : token:string -> t
(** Bearer token authentication (e.g., OAuth 2.0) *)

val digest : username:string -> password:string -> t
(** HTTP Digest authentication *)

val custom : (Headers.t -> Headers.t) -> t
(** Custom authentication handler *)

val apply : t -> Headers.t -> Headers.t
(** Apply authentication to headers *)